// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_VIEWS_WIDGET_NATIVE_WIDGET_MAC_H_
#define UI_VIEWS_WIDGET_NATIVE_WIDGET_MAC_H_

#include "base/macros.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/views/widget/native_widget_private.h"

#if defined(__OBJC__)
@class NativeWidgetMacNSWindow;
#else
class NativeWidgetMacNSWindow;
#endif

namespace views {
namespace test {
    class HitTestNativeWidgetMac;
    class MockNativeWidgetMac;
}

class BridgedNativeWidget;

class VIEWS_EXPORT NativeWidgetMac : public internal::NativeWidgetPrivate {
public:
    NativeWidgetMac(internal::NativeWidgetDelegate* delegate);
    ~NativeWidgetMac() override;

    // Retrieves the bridge associated with the given NSWindow. Returns null if
    // the supplied handle has no associated Widget.
    static BridgedNativeWidget* GetBridgeForNativeWindow(
        gfx::NativeWindow window);

    // Return true if the delegate's modal type is window-modal. These display as
    // a native window "sheet", and have a different lifetime to regular windows.
    bool IsWindowModalSheet() const;

    // Deletes |bridge_| and informs |delegate_| that the native widget is
    // destroyed.
    // This is usually called from the NSWindowDelegate. A derived class can
    // override this method for an early hook into the native window teardown.
    virtual void OnWindowWillClose();

    // Returns the vertical position that sheets should be anchored, in pixels
    // from the bottom of the window.
    virtual int SheetPositionY();

    // internal::NativeWidgetPrivate:
    void InitNativeWidget(const Widget::InitParams& params) override;
    void OnWidgetInitDone() override;
    NonClientFrameView* CreateNonClientFrameView() override;
    bool ShouldUseNativeFrame() const override;
    bool ShouldWindowContentsBeTransparent() const override;
    void FrameTypeChanged() override;
    Widget* GetWidget() override;
    const Widget* GetWidget() const override;
    gfx::NativeView GetNativeView() const override;
    gfx::NativeWindow GetNativeWindow() const override;
    Widget* GetTopLevelWidget() override;
    const ui::Compositor* GetCompositor() const override;
    const ui::Layer* GetLayer() const override;
    void ReorderNativeViews() override;
    void ViewRemoved(View* view) override;
    void SetNativeWindowProperty(const char* name, void* value) override;
    void* GetNativeWindowProperty(const char* name) const override;
    TooltipManager* GetTooltipManager() const override;
    void SetCapture() override;
    void ReleaseCapture() override;
    bool HasCapture() const override;
    ui::InputMethod* GetInputMethod() override;
    void CenterWindow(const gfx::Size& size) override;
    void GetWindowPlacement(gfx::Rect* bounds,
        ui::WindowShowState* show_state) const override;
    bool SetWindowTitle(const base::string16& title) override;
    void SetWindowIcons(const gfx::ImageSkia& window_icon,
        const gfx::ImageSkia& app_icon) override;
    void InitModalType(ui::ModalType modal_type) override;
    gfx::Rect GetWindowBoundsInScreen() const override;
    gfx::Rect GetClientAreaBoundsInScreen() const override;
    gfx::Rect GetRestoredBounds() const override;
    void SetBounds(const gfx::Rect& bounds) override;
    void SetSize(const gfx::Size& size) override;
    void StackAbove(gfx::NativeView native_view) override;
    void StackAtTop() override;
    void StackBelow(gfx::NativeView native_view) override;
    void SetShape(SkRegion* shape) override;
    void Close() override;
    void CloseNow() override;
    void Show() override;
    void Hide() override;
    void ShowMaximizedWithBounds(const gfx::Rect& restored_bounds) override;
    void ShowWithWindowState(ui::WindowShowState state) override;
    bool IsVisible() const override;
    void Activate() override;
    void Deactivate() override;
    bool IsActive() const override;
    void SetAlwaysOnTop(bool always_on_top) override;
    bool IsAlwaysOnTop() const override;
    void SetVisibleOnAllWorkspaces(bool always_visible) override;
    void Maximize() override;
    void Minimize() override;
    bool IsMaximized() const override;
    bool IsMinimized() const override;
    void Restore() override;
    void SetFullscreen(bool fullscreen) override;
    bool IsFullscreen() const override;
    void SetOpacity(unsigned char opacity) override;
    void SetUseDragFrame(bool use_drag_frame) override;
    void FlashFrame(bool flash_frame) override;
    void RunShellDrag(View* view,
        const ui::OSExchangeData& data,
        const gfx::Point& location,
        int operation,
        ui::DragDropTypes::DragEventSource source) override;
    void SchedulePaintInRect(const gfx::Rect& rect) override;
    void SetCursor(gfx::NativeCursor cursor) override;
    bool IsMouseEventsEnabled() const override;
    void ClearNativeFocus() override;
    gfx::Rect GetWorkAreaBoundsInScreen() const override;
    Widget::MoveLoopResult RunMoveLoop(
        const gfx::Vector2d& drag_offset,
        Widget::MoveLoopSource source,
        Widget::MoveLoopEscapeBehavior escape_behavior) override;
    void EndMoveLoop() override;
    void SetVisibilityChangedAnimationsEnabled(bool value) override;
    void SetVisibilityAnimationDuration(const base::TimeDelta& duration) override;
    void SetVisibilityAnimationTransition(
        Widget::VisibilityTransition transition) override;
    ui::NativeTheme* GetNativeTheme() const override;
    void OnRootViewLayout() override;
    bool IsTranslucentWindowOpacitySupported() const override;
    void OnSizeConstraintsChanged() override;
    void RepostNativeEvent(gfx::NativeEvent native_event) override;

protected:
    // Creates the NSWindow that will be passed to the BridgedNativeWidget.
    // Called by InitNativeWidget. The return value will be autoreleased.
    virtual NativeWidgetMacNSWindow* CreateNSWindow(
        const Widget::InitParams& params);

    internal::NativeWidgetDelegate* delegate() { return delegate_; }

private:
    friend class test::MockNativeWidgetMac;
    friend class test::HitTestNativeWidgetMac;

    internal::NativeWidgetDelegate* delegate_;
    scoped_ptr<BridgedNativeWidget> bridge_;

    Widget::InitParams::Ownership ownership_;

    DISALLOW_COPY_AND_ASSIGN(NativeWidgetMac);
};

} // namespace views

#endif // UI_VIEWS_WIDGET_NATIVE_WIDGET_MAC_H_
